Southeast Culvert

What Southeast Culvert does

Southeast Culvert Inc. is a privately held manufacturer and distributor of storm drainage products founded in 1981 and headquartered at a single large-scale manufacturing facility in Winder, Georgia, which the company claims is the largest single-site culvert plant in the United States. Its core product line spans corrugated steel pipe (CSP) in diameters from 12 to 144 inches with galvanized, aluminized Type 2, and polymer coatings; HDPE corrugated plastic pipe (NFLOW) in 12 to 60 inch diameters; Stormkeeper SK75 and SK180 stormwater detention chambers; structural plate; end treatments and concrete headwalls; and custom fabrications including niche work for film studios. The company also holds the exclusive Georgia sales representation for Hydro International water quality products, extending its offering into filtration and TSS removal. Engineering and product offerings meet ASTM, AASHTO, and Georgia DOT specifications.

The business operates a sales-led, engineering-driven go-to-market model. The in-house engineering department is the primary commercial interface, responding within a day to project RFIs from civil engineering design firms, contractors, developers, and government DOTs with budget pricing, stage storage tables, submittal packages, and value-engineering proposals. Pricing is quote-based and project-specific (no public list pricing), determined by diameter, gauge, coating, corrugation profile, quantity, and fabrication requirements. A dealer network supplements direct sales for mid-market and smaller municipal buyers. Customer segments are verticalized across commercial real estate, education, sports and recreation, senior living, retail, and public infrastructure, with concentration of named projects in Georgia and selective expansion into adjacent Southeast states.

Southeast Culvert monetizes entirely through hardware sales — manufactured pipe, chambers, plates, and water quality devices — on a per-project basis, with engineering services embedded in the sales motion rather than billed separately. Documented cost advantages versus reinforced concrete pipe (50-100% lower installed cost in the Atlanta area) and a documented 75-100 year service life for aluminized Type 2 CSP in Georgia's acidic soils support its specification-driven position. The company is self-funded with no disclosed external investors, parent entity, or funding rounds, and operates 101-250 employees.

Name

Southeast Culvert

Legal name

Southeast Culvert Inc.

Website

https://southeastculvert.com

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

101–250 employees

Short description

Southeast Culvert is a privately held Georgia-based manufacturer of corrugated steel and HDPE pipe, stormwater chambers, and drainage products serving civil engineers, contractors, developers, and DOTs across the Southeast US from the largest single-site culvert plant in the United States.

Ownership category

akta.pro rank

Product category

Storm Drainage Products

NAICS

Water and Sewer Line and Related Structures Construction (23711), Concrete Pipe, Brick, and Block Manufacturing (32733)

SIC

Steel Pipe & Tubes (3317)

akta.pro primary industry

Stormwater Drainage & Culvert Systems (IMANADAH)

akta.pro secondary industries

Roadway Drainage & Stormwater Works (Culverts, Ditches, Catch Basins) (IMAFAEAG), Culverts, Bridges & Cross-Drainage Structures (Hydraulic Capacity & Rehabilitation) (EUANAEAC), Storage & Conveyance Structures (Reservoirs, Tanks, Culverts, Tunnels) (IMAFAGAE)

Keywords

• Corrugated metal pipe
• HDPE drainage pipe
• Stormwater detention systems
• Storm drainage manufacturing
• Underground detention products

Headquarters

HQ city

Winder

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Storm Drainage Product Manufacturing and Sales: Southeast Culvert manufactures corrugated metal pipe, corrugated HDPE plastic pipe, concrete headwalls, custom fabrications, end treatments, structural plate, and stormwater chamber products. Products are sold to contractors, engineers, developers, municipalities, and government DOTs on a per-project basis. The company provides engineering design services and budget pricing as part of the sales motion, supporting specification decisions and value engineering proposals. Revenue is generated through product sales, with pricing varying by diameter, gauge, coating type, and quantity per project.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Southeast Culvert manufactures and distributes corrugated metal pipes, HDPE corrugated plastic pipes, stormwater detention chambers, structural plates, concrete headwalls, and related drainage products for the construction industry. The company provides engineering design services, value engineering proposals, custom fabrication, and budget pricing for storm drainage projects. It operates the largest single-site culvert manufacturing plant in the United States from its Winder, Georgia facility.

Product overview

Southeast Culvert is a storm drainage product manufacturer offering a comprehensive portfolio of drainage solutions. The core products include corrugated metal pipe (12"-144" diameter, available in galvanized, aluminized type 2, and polymer coatings), NFLOW HDPE corrugated plastic pipe (12"-60" diameter), and large diameter pipe (54"-144"). These are complemented by underground detention systems using corrugated steel pipe, Stormkeeper SK75 and SK180 stormwater chamber products for detention and reduced runoff applications, water quality products (as exclusive Georgia sales representative for Hydro International), structural plate for culverts and stream enclosures, end treatments (flared end sections, headwalls), and specialty custom fabrications. The company operates as the largest single-site culvert manufacturing plant in the United States.

Differentiator

Problem solved

Functional benefit

Brands

• Stormkeeper: Stormwater chamber detention system product line including SK75 and SK180 models for underground detention and reduced runoff retention systems.
• Max Flow Spiral Rib Pipe
• NFLOW HDPE

Products and services

• NFLOW HDPE Corrugated Plastic Pipe High-density polyethylene corrugated plastic pipe manufactured in diameters 12" to 60", featuring the highest strength-to-weight ratio among drainage products. Effective in pH range from 2 to 14, highly resistant to abrasive wear due to ductility, and unaffected by soil resistivity. Used for storm drainage applications in commercial and residential construction projects.
• Max Flow Spiral Rib Pipe Corrugated metal pipe with spiral rib profile that achieves Manning's n of 0.012, hydraulically equivalent to HDPE and reinforced concrete pipe. Standard joint length of 20 feet compared to 8 feet for RCP, with 10-20% lower weight. Includes prefabricated junctions and long pipe joints for hydraulic efficiency.
• Corrugated Metal Pipe
• Large Diameter Pipe
• Underground Detention Systems
• Stormkeeper Stormwater Chambers
• Water Quality Products
• Structural Plate
• End Treatments
• Specialty Products and Custom Fabrication
• Concrete Headwalls

Quantifiable outcome

• Installed cost of reinforced concrete pipe is 50% to 100% higher than corrugated steel pipe or HDPE in the Atlanta area, based on public construction contracts
• +5 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Hydro InternationalcoreTechnology or IntegrationSoutheast Culvert is the exclusive sales representative for Hydro International water quality products in Georgia. The partnership provides clients with high-performance, low-maintenance stormwater management technologies including the First Defense WQU device (for 80% TSS removal) and other Hydro International proprietary water quality units. Southeast Culvert provides design proposals for Hydro International devices as part of its engineering services.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Advanced Drainage Systems (ADS): The leading North American manufacturer of HDPE corrugated plastic pipe and stormwater management products (including N-12 pipe and StormTech chambers). Directly comparable on HDPE drainage pipe and underground detention where Southeast Culvert also competes via NFLOW HDPE and Stormkeeper SK75/SK180.
• Contech Engineered Solutions: A national manufacturer and distributor of corrugated metal pipe, HDPE pipe, stormwater chambers, and water-quality products serving civil engineers, contractors, and municipalities. Directly competes with Southeast Culvert across the same product categories and customer segments but at significantly larger scale.
• Prinsco: HDPE corrugated pipe and agricultural drainage product manufacturer with U.S. operations in the Midwest and Southeast. Comparable to Southeast Culvert's NFLOW HDPE line on diameter ranges, chemical resistance, and design-engineering sales support.
• Inland Pipe: Manufacturer of HDPE corrugated pipe and related drainage products with manufacturing operations across the Eastern U.S. Directly competes with Southeast Culvert in HDPE pipe segments (12"–60" diameter) for stormwater and detention applications.
• Lane Enterprises: Regional manufacturer of corrugated metal pipe, structural plate, and stormwater products serving the Mid-Atlantic and Southeastern United States. Closest direct peer to Southeast Culvert on aluminized Type 2 CMP given overlapping Southeast geography and product line.
• National Pipe & Plastics: Manufacturer of HDPE and PVC pipe products for water, sewer, and stormwater applications with operations primarily in the Eastern U.S. Directly comparable product profile to Southeast Culvert's NFLOW HDPE line within overlapping Northeast/Southeast geographies.

Regional players

• Jensen Precast: Manufacturer of precast concrete products including manholes, catch basins, vaults, and drainage infrastructure with operations across the Western U.S. Adjacent peer on underground stormwater infrastructure and structural concrete products competing for the same project specifications.
• Pacific Corrugated Pipe Company: West Coast manufacturer of corrugated steel pipe, structural plate, and stormwater drainage products. Comparable on product categories (CMP, structural plate, detention systems) but primarily serves California, Oregon, and Hawaii rather than the Southeast.

Broad incumbents

• Oldcastle Infrastructure (CRH): A national division of CRH plc supplying concrete, steel, and HDPE pipe plus drainage and stormwater management products across the U.S. Competes with Southeast Culvert on large-diameter pipe and underground detention but operates across a much broader product portfolio and national footprint.
• Forterra: A national manufacturer of concrete pipe, precast, and stormwater drainage products serving public infrastructure and private development. Comparable on drainage products (storm sewers, culverts, headwalls) but primarily focused on concrete rather than steel/HDPE.

Market position

Strengths5 records

Weaknesses6 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/Southeast-Culvert-900377219987247
• LinkedInlinkedin.com/company/southeast-culvert-inc

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Southeast Culvert